| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna switch module in which alleviating a problem in consistency with a SAW filter is alleviated and static electrostatic energy can be released to a GND. SOLUTION: The antenna switch module has a low frequency side circuit for transmitting/receiving a low frequency band signal and a high frequency side circuit for transmitting/receiving a high frequency band signal. In the low frequency side circuit, a low frequency side SAW filter and a low frequency side low-pass filter are connected in parallel with a low frequency side switching circuit and in the high frequency side circuit, a high frequency side SAW filter, a triple band response circuit and a high frequency side low-pass filter are connected in parallel with a high frequency side switching circuit. The antenna switch module is characterized in that a low frequency side grounding typeλ/4 strip line is disposed in front of the input of the low frequency side SAW filter and/or a high frequency side grounding typeλ/4 strip line is disposed in front of the input of the high frequency side SAW filter. COPYRIGHT: (C)2005,JPO&NCIPI
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